The LEDÖs illuminate and flash with a light pattern that is continuously changing and controlled by the solid-state electronic circuitry. The lens is constructed of a strong polycarbonate. The magnet model comes with a 7 ft. heavy-duty coiled power wire with a cigarette lighter plug. Made for all weather conditions and maintenance free. Available in either magnet or permanent mount. Dimension: L-15.5 x W-7 x H-5.25 12-volt / 1 amps Magnet pull strength 4 - 66lbs. The four magnets are rubber cover to protect the vehicles paint. WOLO MANUFACTURING CORP. is the leader in horns (electric, air, truck, marine, electronic specialty, air & back-up alarms) offering the highest quality and the largest selection for cars, trucks and industrial equipment. Wolo also offers a complete product line of vehicle emergency warning lights. Wolo has supplied innovative automotive accessories: horns, emergency warning lights, security and lighting, to the aftermarket for 40 years. All of our products are made to the highest quality to give the vehicle owner many years of dependable service.